DC molded Case Circuit Breaker

DC MCCB Circuit breaker is an incredible device used in photovoltaic installations and is perfect to turn your solar system to the high power system, the protection current starts from 63A to 630A, and even some can reach 1200A,  and welcome the era of new energy technology in style.

On the other hand, the DC MCCB Circuit Breaker has an incredible number of accessories that make all its tasks and functions possible, such as a powerful shunt release, an auxiliary switch and an alarm switch in case of emergency.

DC Molded Case Circuit Breakers primarily serve the purpose of protecting against overloads and short circuits in low-voltage distribution systems and motor circuits. Their reliability and stability make them widely applied in industrial scenarios. 

DC MCCBs are typically used in a variety of applications, including photovoltaic (PV) solar panel systems, battery backup systems, and other types of DC electrical systems. They are designed to interrupt the flow of electrical current in the event of an overcurrent or short circuit, helping to prevent damage to the electrical system and reducing the risk of fires.

DC MCCBs are typically installed in electrical panels or switchboards and are used to protect the DC circuits and components of the electrical system. They are available in a range of different sizes and ratings, and can be used in both low voltage and high voltage DC systems.

Overall, DC MCCBs are an important safety feature in any DC electrical system, as they help to protect against overcurrents and short circuits and reduce the risk of fires and other electrical accidents.

Size and Enclosure: DC MCCBs are typically larger, with enclosures made from materials like thermosetting Dough Molding Compounds (DMC) or flame-retardant Bulk Molding Compounds (BMC) with a V-0 rating, while DC MCBs are much smaller, with enclosures usually made from flame-retardant PA66 with a V-o rating.

Current Ratings: DC MCCBs generally have current ratings below 1600A, while MCBs have maximum current ratings below 125A. The difference in capacity means that DC MCCBs have wider application scenarios and accommodate thicker wires, sometimes reaching several hundred square millimeters, whereas DC MCBs are suitable for 50 square millimeters or less wires.

Mounting Methods:DC MCCBs are primarily installed using screws, which provide a secure and stable connection. MCBs are typically mounted on DIN rails. The different mounting methods make MCCBs more stable and easier to install compared to MCBs.

Product Lifespan: DC MCCBs have greater spacing between phases and incorporate arc extinguishing chambers, possessing stronger arc-extinguishing capability. They can withstand larger short-circuit currents and are less likely to cause phase-to-phase short circuits, resulting in a longer lifespan compared to MCB.

Application Fields: DC MCCBs are mainly used in industrial and large commercial electrical systems, while DC MCBs are commonly used in residential, small commercial, and light industrial applications, making them more suitable for installation in compact spaces.